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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Hot Cam vs. Comp Cam 503

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Old Apr 16, 2008 | 12:22 AM
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Default Hot Cam vs. Comp Cam 503
Whats the hp and torque difference between these 2 cams? Thanks!
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Old Apr 16, 2008 | 01:01 AM
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hotcam might make you 330...
305...340-345
503...345-350
306...355-360
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Old Apr 16, 2008 | 01:25 AM
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in the dyno thread theres several people with the hotcam that dynod in the 350's...
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Old Apr 16, 2008 | 08:32 AM
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Originally Posted by 355z28
in the dyno thread theres several people with the hotcam that dynod in the 350's...
Yeah, it takes perfect tuning and everything possible to make the most efficient setup as possible to make that kind of # with a hotcam
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Old Apr 16, 2008 | 02:55 PM
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i have the hotcam now but a buddy gave me a comp 503 would it be worth the swap. ialready have the springs but will my pushrods and lifters work there all new.
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Old Apr 16, 2008 | 03:08 PM
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You wouldn't want to use the LT4 springs with the 503 if thats what you have. You would definitely pick up a few ponies with the 503 over the hotcam but it depends on what you want out of it as to if it is worth changing or not. Your pushrods and lifters should be fine if they are new and to spec.
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Old Apr 16, 2008 | 04:44 PM
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As said you would pick up a few ponies and the lt4 springs will not work assuming they are the springs you are currently using. For all that work Im not sure if its really worth it or not.
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Old Apr 16, 2008 | 09:09 PM
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would it honestly be worth all the work to gain what 5-10ish hp over the hotcam? if it was me i would keep the hotcam. not worth all the trouble to me a few hp. unless the 503 ran a significantly better 1/4 would i change it
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Old Apr 16, 2008 | 10:12 PM
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Originally Posted by mean_greenZ
would it honestly be worth all the work to gain what 5-10ish hp over the hotcam? if it was me i would keep the hotcam. not worth all the trouble to me a few hp. unless the 503 ran a significantly better 1/4 would i change it
I personally wouldn't change it until I decided to go heads/cam.
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Old Apr 16, 2008 | 11:57 PM
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its not worth it man, the hassle, downtime, money gaskets.. blah blah, for a next to nothing gain basically.
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Old Apr 17, 2008 | 06:22 PM
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Buy some Scorpion 1.7 rockers and rasie your lift on the hotcam from .525/.525 to .558/.558. And no gaskets needed, only an hour or so downtime, and about 10hp to gain. Just a suggestion. I picked up over a tenth and 2 mph going form 1.6s to 1.7s on a bolt on LT1. Should be even more with that cam. Good luck.
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Old Apr 17, 2008 | 07:10 PM
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Originally Posted by LT14LIFE JT
Buy some Scorpion 1.7 rockers and rasie your lift on the hotcam from .525/.525 to .558/.558. And no gaskets needed, only an hour or so downtime, and about 10hp to gain. Just a suggestion. I picked up over a tenth and 2 mph going form 1.6s to 1.7s on a bolt on LT1. Should be even more with that cam. Good luck.
that will require a valve spring swap because the lt4's are only good up to a .540 lift.
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Old Apr 17, 2008 | 08:08 PM
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^^^I believe it's more like .525.
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Old Apr 17, 2008 | 10:10 PM
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Originally Posted by porksoda
^^^I believe it's more like .525.
The cam has a .525 lift but the springs can handle up to a .540
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